Method of conducting a thread initially along a system of rotating mutually inclined rollers



1959 A. P. L. HEIDWEILLER 2,915,805

0F counuc'rmc A THREAD INITIALLY ALONG A SYSTEM METHOD 0F ROTATING MUTUALLY INCLINED ROLLERS Filed April 30, 1957 2 SheetS-Sheet 1 FIG.]

INVENTOR. qua/s7 PL fie/aus/LLEg BY 6V 0w Dec. 8, 1959 A. P. HEIDWEILLER 2,915,805

METHOD'OF CONDUCTING A THREAD INITIALLY ALONG A SYSTEM OF ROTATING MUTUALLY INCLINED ROLLERS Filed April 30, 1957 2 Sheets-Sheet 2 FIG.2

IN V EN TOR. $6057 I? L. HEIDwEILLEQ United States Patent IVIETHOD OF CONDUCTING A THREAD INITIAL- LY ALONG A SYSTEM OF ROTATING MUTU- ALLY INCLINED ROLLERS August P. L. Heidweiller, Nijmegen, Netherlands, as-

signor to Kunstzijdespinnerij Nyma N.V., Numegen, Netherlands, a limited liability company of the Netherlands Application April 30, 1957, Serial No. 655,981

Claims priority, application Netherlands May 8, 1956 1 Claim. (Cl. 28-72) The invention relates to a method of conducting a thread initially along a system of rotating rollers the axes of which are mutually inclined for storing and advancing the thread about said rollers in a helical path.

It has been proposed to use an endless belt or rope for starting up the thread advancing, the belt or rope being permanently maintained around the rollers or only being present during the starting up by separably joining together the two ends of a length of flexible elastic material.

It is the object of the present invention to provide an easy and simple method of initially conducting a thread along a system of rotating mutually inclined rollers without the use of accessories.

In accordance with the present invention, this is accomplished by attaching the thread to one of the rollers, allowing a wrap to be built up around said roller, stretching the wrap, placing the wrap around the other roller or other rollers, allowing the wrap to traverse the length of said rollers, carrying with it the on-coming thread and at the end of the traverse severing the wrap and removing it from said rollers.

Of course, the method according to the invention can only be applied to threads which have such a character that they can resist the stretching necessary to place them around the rollers of the system without breaking. This requirement is met, for example, by starting up the spinning of viscose threads which are advanced and treated with a device as described in the copending application Serial No. 656,303, filed May 1, 1957.

The aim of the device claimed in the aforesaid copending application is to treat freshly spun threads with treating liquids in a very compact space; for this reason a long main roller with a great radius is used and a number of counter-rollers with a small radius which are placed close to the main roller.

The method according to the invention is especially useful for this device rigorously focused on economy of space and simplicity.

In spite of the compactness the starting-up is easy and special dexterity of the operator is not required. Moreover, the absence of accessories is in accordance with the simplicity aimed at.

The invention may be more readily understood by reading the accompanying drawings in which:

Figure 1 is a perspective view with parts in section of a device containing four roller systems consisting of a main roller and a number of counter rollers, the axes of which are mutually inclined.

Figure 2 is a front elevational view of Figure 1.

The thread 11 leaving the supply station 1, in this case a spinneret, is guided over an arrangement of the continuous roller 14 and the counter-rollers 16 to the arrangement of the continuous roller 17 positioned along several spinnerets and the counter-rollers 18. The roller 17 is successively sprinkled with the aid of the liquid supply means 22, 23, 24 with a dilute acid solution, washing water and bleaching lye. The treating liquids mentioned flow into the vessel 25 and from this vessel through the apertures 27, 28 and 29 into the divided troughs 30, 31 and 32. So as to separate the various liquids on the roller system the rollers are provided with flanges 16a or the like.

After leaving the rollers 17, 18 the thread reaches the roller system 19, 20. With the aid of washing water from the vessel 33 a last washing takes place. Then the thread is guided to the roller system 2121a, the continuous roller 21 of which is internally heated with steam. Thus the thread is dried.

The threading up of the roller system 1416 takes place as follows: the thread coming out of the spinning bath is placed onto the rotating roller 14. In this way a small band is formed around said roller on the spot where the thread has been placed onto that roller. After a small band with a certain thickness has been formed it is stretched and placed about the roller 16 after which the band travels in helical turns over a roller system 14-16.

When the band has arrived at the end of the roller 16 during which period helical turns of the single thread have been formed behind said band, the connection between said band and said single thread is cut and said thread is placed onto the roller 17. Subsequently the system 1718 is threaded-up in the same way and thereafter the system 19-20.

Though the invention has been illustrated with the starting-up device according to the copending application Serial No. 656,303, the invention is not limited to this example.

For the starting-up of the advancing of highly stretchable threads roller systems may be used in which the rollers have the same radius and in which they are not close to each other. Moreover the starting-up method according to the invention may be used for roller systems in which the thread travels around more than two rollers.

The invention is not limited to the starting-up of the advancing of threads, but is also suitable for the advancing of ribbons and tubes.

Since it is obvious that many changes and modifications can be made in the above-described details without departing from the nature and spirit of the invention, it is to be understood that the invention is not to be limited to the details described herein except as set forth in the appended claim.

What I claim is:

A method of conducting a stretchable thread initially along a system of rotating mutually inclined rollers in a succession of helical loops which comprises attaching the thread to one of the rollers, allowing a wrap to be built up around said roller, stretching the wrap, placing the wrap around at least one other roller of the system, allowing the wrap to traverse the length of said rollers, carrying with it the on-coming thread, and at the end of the traverse severing the wrap and removing it from said rollers.

References Cited in the file of this patent UNITED STATES PATENTS 2,545,015 Barker Mar. 13, 1951 

